Spinning ring



June 9, 1959 P. F. GRlSHlN ETAL 2,889,679

SPINNING RING Filed April 2'. 195a 1N NTORS PETER E GRI IN BY ZOLTAN SZALOKI ERNEST E; H. ZIMMERMA IfiJ g ATT RNEY Application April 2, 1958, Serial No. 725,862

1 Claim. (Cl. 57==119) This invention relates to rings as utilized in spinning textile fibers into yarn. In the use of such rings, the strand of fibers is presented to the bobbin through a wire link or traveler which is loosely mounted on the top flange of the spinning ring. The traveler is drawn around the ring at high speed by the pull of the rapidly rotated spindle, and the resulting yarn is wound on the cop or bobbin mounted on the spindle.

In recent practice, both the spindle speed and the outside diameter of full bobbins have been substantially increased and the rate of traveler speed relative to the ring has been correspondingly increased. More rapid traveler wear and increased traveler breakage have resulted.

In the conventional spinning ring, a vertical web supports a top flange and the traveler-engaged surface at the inner edge of the top flange has a radius substantially equal to one-half of the thickness of the top flange, while the flange-engaging surface of the conventional traveler has a very substantially larger radius. These surfaces thus engage each other with substantially line contact, and the pressure of the traveler against this small contact area becomes excessive.

It is the general object of this invention to provide a bearing surface along the traveler flange of a spinning ring which will coact with the associated surface of a traveler to present a substantially greater traveler contact area and with corresponding reduction in unit pressure and traveler heating.

To the attainment of this object, a bearing surface is provided on the inside of the ring flange which is of only slightly smaller radius than the associated traveler surface. A larger contact area is thus provided, and the exact location of this area being rather loosely defined due to variations in yarn pull and other factors. Increased yarn clearance in the traveler is also provided by sharply reducing the bearing surface of the ring at the upper inner edge or corner thereof.

The invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly set forth in the appended claim.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a sectional side elevation showing parts of a bobbin and spinning ring with associated elements; and

Fig. 2 is an enlarged cross section of the upper flange of a spinning ring, together with an associated commercial traveler.

Patented dune 9, 1959 Referring to Fig. 1, a spinning ring 10 is mounted in a holder 11 which is secured in the upper face of a ring rail 12. A bobbin B is mounted on a spindle S and a strand of yarn Y is directed to the bobbin through a traveler T. This general combination of parts is standard practice and this invention relates particularly to the novel and improved flange 10a of the ring 10.

The outer part 20 of the flange 10a presents a substantially semi-circular contour which is common in such spinning rings. The inner part 21 of the flange 10a is, however, of special formation. The lower portion of the flange 10a presents a circular contour with a relatively large radius R and the upper portion or inner upper corner of the part 21 has a contour of relatively small radius r. The radius r may desirably be about one-half the length of the radius R. These two curved surfaces meet at the inner edge of the ring and are or may be approximately tangential at their meeting point.

The upper surface of the ring may be flat and horizontal, as in the usual construction, but is preferably inwardly and upwardly inclined as shown at 14 in Fig. 2 to provide increased yarn clearance. The surface defined by the radius r is preferably tangential also to the surface 14.

The usual running position of the yarn with respect to the traveler T and ring 10 is as shown at the right in Fig. 2 and with a substantial clearance space between the yarn and the upper corner of the ring. Gripping or binding of the yarn between the ring and traveler is thus effectively prevented.

It will be noted that the inner part 21 of the flange Zttia is in substantial contact with the coacting face of the traveler T over quite a large area, so that the unit pressure of the traveler against the ring flange is greatly reduced. The increased contacting areas also permit much more rapid heat transfer from the traveler to the ring flange. Accordingly, the overheating and burning of the travelers is substantially reduced, with corresponding saving in lost time for replacement, as well as a saving in traveler expense.

The provision of substantial yarn clearance at the upper inner corner of the top flange of the ring prevents crowding and pinching of the yarn at that locus and effects a major reduction in yarn breakage.

Having thus described our invention and the advantages thereof, We do not wish to be limited to the details herein, otherwise than as set forth in the claim, but What is claimed is:

A spinning ring having a vertical web with a top flange inwardly and outwardly overhanging said web, and the inner overhanging portion of said flange having a traveler-engaging inner surface of a radius not substantially less than two-thirds of the vertical thickness of said top flange, and having the upper inner corner of said flange cut away for yarn clearance at a radius substantially one-half as great as said first-named radius.

References Cited in the file of this patent FOREIGN PATENTS 

